NORMAN, Okla. — Oklahoma is wrapping up its second full week of spring practice, with spring break next week. The Sooners’ spring game is set for Saturday, April 13.

While wait, it’s time for another edition of our Oklahoma football mailbag.

Anything interesting yet in terms of where guys are lining up on defense? Norwood at safety? Radley-Hiles at corner? Caleb Kelly? — James, Fort Worth, Texas

Bookie Radley-Hiles is working at nickel back for now, based on what he said during his interview session with us last week. He always has been viewed — by many outsiders, at least — as a more natural corner, and that is the position he played in high school. But Oklahoma coaches have seemed to trend toward recruiting taller cornerbacks, so maybe for the system Alex Grinch wants to run, Radley-Hiles is better at nickel/safety.

Kelly told us last week that he is back to playing Will linebacker, which is interesting. Last offseason, Oklahoma coaches...